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BMW 3-Series (E90 E92) Forum
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335i suspension overhaul via M3 suspension + Ground Control (long & lots of pics)
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12-11-2009, 06:21 PM | #23 |
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Maybe I used the wrong terminology
I was talking about the wider part. Wouldn't the axle shafts need to be longer if the track widens?
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12-12-2009, 01:03 AM | #26 |
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The GC kit is $1850 or whatever their website says www.ground-control.com
All M3 parts: expect this number to be around $2200. But Jay can get potentially better pricing on them. Last edited by Speediance; 12-12-2009 at 02:57 PM.. |
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12-14-2009, 02:48 AM | #27 |
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I've been getting a lot of question regarding the exact parts used in the conversion including the custom parts designed by Ground Control. So here is the list:
Front 1) Sway bars with custom GC bushings kit 2) Strut tower brace kit (I have all parts but this one on my car). 3) Control arms 4) Tension rods Rear 1) Subframe bushings 2) Custom GC rear toe arm kit 3) Custom GC upper camber arm kit 4) M3 front link 5) Sway bars with custom GC bushings kit 6) Rear lower arm kit ("camber arms") |
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12-14-2009, 09:02 AM | #28 |
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Any reason why you didn't go with HP on this? They seem to have worked out a complete m3 suspension swap some time ago, including custom components.
Also, I've installed the M3 sways and had no problem using the m3 brackets. What issues did you run into? |
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12-14-2009, 09:59 AM | #29 | |
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so before, your tires looked like this (looking from the back of the car) |----| with more negative camber, they look like this: /----\ the actual contact surface of the tires to the road is a bit wider, though the center part of the hub is still in the same place. |
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12-14-2009, 01:26 PM | #30 | |
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1) I wanted ground control suspension 2) Jay is extremely knowledgeable and innovative 3) Some custom pieces could be potentially better than the M3 ones; which they are, according to guy who did the alignment for my car. I dont know all the details on this one, as I didnt do the actual work. But like the pictures prove, there was clearly some issue. I will find out... |
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12-14-2009, 05:35 PM | #31 | ||
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First Post, hope its good.
My name is Jay from Ground Control, and I have been asked to start answering some of these questions. We are in the process of becoming a sponsor, and will have a banner up soon, but I don't want the questions to build up so much that we get overwhelmed.
So here goes the first answers: Quote:
The GC rear links are little bit complicated in terms of "what" and "why". The GC links are turnbuckle style, which are easier to adjust and easier to lock down. Of course this begs the question of "why?". If you look carefully, we have made the rear links longer. This reduces the camber and toe curves in the rear suspension geometry. the toe links are locked into the longest position, and then toe is altered from that position. Quote:
The front bushings and brackets are just weak, so we elect to not buy them. In fact if you look at the M3 brackets, they are weaker than the 335 brackets even though the front bar is stiffer. Jay PS I can typically answer qusetioons in the morning and afternoon, but I have to work in the shop in the middle of the day |
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12-14-2009, 05:37 PM | #32 | |
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Jay from GC PS 8-9mm at the arm, depending on where you started in the first place. PPS track width at the contact patch is a little wider than that, as measured for SCCA racing would be about 13mm wider per side. |
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12-14-2009, 08:31 PM | #33 | |
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12-15-2009, 04:37 AM | #34 |
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A question for you. I don't live in Cali, anywhere near Cali or have the ability to drive to Cali.
Can I order the parts from you and have a local shop here in Little Rock perform the work? One of my hesitancies about getting new suspension pieces has been the shop work involved. Seems like everyone that gets work done is near a shop like yours.
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12-15-2009, 07:12 AM | #35 |
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Rough idea of the time (hrs) it takes to swap the subframe bushings?
Apart from the exhaust, what else need to be removed? Many Thanks!
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12-15-2009, 11:47 AM | #36 |
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Fantastic write-up! I feel the same way about my c/o's. It's amazing the difference a good set-up makes.
Go out and get yourself an LSD. It'll make the driving experience that much better. Being able to adjust the car mid-corner is phenominal! You won't regret it.
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12-15-2009, 01:04 PM | #37 | |
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Jay is planning to put together 2 kits for E90Post community: 1) The C/O kit 2) The M3 conversion kit along with all his custom made parts As Jay mentioned, they are in the process of becoming a vendor on this forum. Once they are you can ask them directions/advice directly. I cannot give much advice, since I didnt do any work on it myself. |
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12-15-2009, 01:05 PM | #38 |
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12-15-2009, 02:03 PM | #39 | |
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All of the brackets, bolts, and the worst part is the brake lines really should be removed so they are not damaged and then then brakes bled. You're welcome, sorry about the bad news. Jay |
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12-15-2009, 05:26 PM | #40 |
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Jay - where in Norcal are you located in?
Speediance - Same question for you. Can i come to you for a short ride? Im located in Southbay - Sunnyvale CA. I Drive bmws for their handling abilities. I've done a few things already but i Just found out one of my V2 shocks are leaking. so looking for a replacement. I already have the M3 front Strut bar, M3 front control and lower arms, m3 rear sub frame bushings. along with the volshlag camber plates and V2 CO and HR front and rear sways. I think the sways a bit too stiff and looking at options on replacing partly or whole new setup. I was thinking of going with HP's setup but I think i want a local Suspension pros to take a look and assess what i need. I had no idea GC was local... TIA for any inputs.. Park. |
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12-15-2009, 05:36 PM | #41 | |
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Hey im in cupertino too, let me know if you guys meet up to compare suspensions! Ive been waiting for a chance to ride in another members car running on v3s and HPauto's swift springs setup. Id like to see the differences between these two options as well. Maybe we can organize something all together?
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12-15-2009, 06:44 PM | #43 | |
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12-16-2009, 12:18 AM | #44 | |
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Soni (aka Pei with the orange 240Z) |
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